title: Exhaled carbon monoxide levels: as a marker of clinical severity and control of asthma.
abstract: A study was conducted to evaluate the role of exhaled carbon monoxide (CO) levels in the management of patients with mild and moderate persistent bronchial asthma. Spirometry, exhaled CO measurements and symptom scoring was done before and after four weeks of treatment with inhaled corticosteroids. Exhaled CO levels were significantly elevated in patients of mild as well as moderate persistent asthma as compared to controls but the levels did not correlate with the disease severity. After four weeks of treatment, there was a decrease in exhaled CO levels in both the groups but the decrease was not found to be statistically significant. Therefore, clinically exhaled CO level is not a useful marker in bronchial asthma.
authors.affiliation: Department of Pulmonary Medicine, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India.
authors.forename: Ravneet Singh
authors.initials: RS
authors.lastname: Grover
authors.forename: Raj
authors.initials: R
authors.lastname: Kumar
mesh_terms: D000280:Administration, Inhalation; D000318:Adrenergic beta-Agonists / Q000008:administration & dosage*; D000328:Adult; D001249:Asthma / Q000175:diagnosis / Q000188:drug therapy* / Q000378:metabolism*; D019819:Budesonide / Q000008:administration & dosage*; D002248:Carbon Monoxide / Q000032:analysis / Q000378:metabolism*; D004983:Ethanolamines / Q000008:administration & dosage*; D005260:Female; D005541:Forced Expiratory Volume / Q000187:drug effects; D000068759:Formoterol Fumarate; D005938:Glucocorticoids / Q000008:administration & dosage*; D006801:Humans; D008297:Male; D011446:Prospective Studies; D013147:Spirometry / Q000295:instrumentation / Q000379:methods; D018709:Statistics, Nonparametric; D014797:Vital Capacity / Q000187:drug effects
chemical_list: D000318:Adrenergic beta-Agonists; D004983:Ethanolamines; D005938:Glucocorticoids; D019819:Budesonide; D002248:Carbon Monoxide; D000068759:Formoterol Fumarate